DHCP problem with vWLC

[Tenere]

Hello together,

I manage a small network with a WiFi guest network. All clients (mobile phones) can connect to DHCP. A new client (coffee maker) can connect to the WiFi guest network but can't get an IP from a DHCP server (Cisco SG300).

The coffee maker (00:11:22:33:44:55) try to connect but stucks in DHCP DISCOVER. iPhones (here: aa:bb:cc:dd:ee:ff) can connect without any problems. Even a washing machine (ab:cd:ef:gh:ij:kl) can connect.

*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP received op BOOTREQUEST (1) (len 308,vlan 0, port 1, encap 0xec03, xid 0x54af7f9)
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP option: 61 (len 15) - skipping
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP option: 55 (len 3) - skipping
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP option: hostname = SIEMENS-TI957FX5DE-001122334455 (len 32)
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP options end, len 72, actual 64
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP (encap type 0xec03) mstype 0ff:ff:ff:ff:ff:ff
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP intf:guest dhcp proxy mode disabled
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP processing DHCP DISCOVER (1)
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP op: BOOTREQUEST, htype: Ethernet, hlen: 6, hops: 0
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP xid: 0xf9f74a05 (4193733125), secs: 18944, flags: 0
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP chaddr: 68:a4:0e:85:32:15
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP ciaddr: 0.0.0.0, yiaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 18:06:15.878: 00:11:22:33:44:55 DHCP siaddr: 0.0.0.0, giaddr: 0.0.0.0

*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP received op BOOTREQUEST (1) (len 308,vlan 0, port 1, encap 0xec03, xid 0x45c60fc4)
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP option: message type = DHCP REQUEST
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP option: 55 (len 9) - skipping
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP option: 57 (len 2) - skipping
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP option: 61 (len 7) - skipping
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP option: requested ip = 172.20.2.1
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP option: lease time = 7776000 seconds
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP options end, len 72, actual 64
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP (encap type 0xec03) mstype 0ff:ff:ff:ff:ff:ff
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP intf:guest dhcp proxy mode disabled
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP processing DHCP REQUEST (3)
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP op: BOOTREQUEST, htype: Ethernet, hlen: 6, hops: 0
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP xid: 0xc40fc645 (3289368133), secs: 0, flags: 0
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP chaddr: aa:bb:cc:dd:ee:ff
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP ciaddr: 0.0.0.0, yiaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP siaddr: 0.0.0.0, giaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 18:06:52.907: aa:bb:cc:dd:ee:ff DHCP requested ip: 172.20.2.1
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP received op BOOTREPLY (2) (len 306,vlan 0, port 1, encap 0xec03, xid 0x45c60fc4)
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option len (including the magic cookie) 70
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: message type = DHCP ACK
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: server id = 172.20.2.100
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: lease time = 21600 seconds
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: 58 (len 4) - skipping
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: 59 (len 4) - skipping
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: netmask = 255.255.255.0
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: gateway = 172.20.2.254
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: DNS server, cnt = 1, first = 8.8.8.8
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP option: 15 (len 10) - skipping
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP options end, len 70, actual 64
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP intf:guest dhcp proxy mode disabled
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP processing DHCP ACK (5)
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP op: BOOTREPLY, htype: Ethernet, hlen: 6, hops: 0
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP xid: 0xc40fc645 (3289368133), secs: 0, flags: 0
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP chaddr: aa:bb:cc:dd:ee:ff
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP ciaddr: 0.0.0.0, yiaddr: 172.20.2.1
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP siaddr: 0.0.0.0, giaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP server id: 172.20.2.100 rcvd server id: 172.20.2.100
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff Assigning Address 172.20.2.1 to mobile
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP success event for client. Clearing dhcp failure count for interface guest.
*DHCP Socket Task: Jul 20 18:06:52.909: aa:bb:cc:dd:ee:ff DHCP success event for client. Clearing dhcp failure count for interface guest.

*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP option len (including the magic cookie) 72
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP option: message type = DHCP DISCOVER
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP option: 61 (len 15) - skipping
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP option: 55 (len 3) - skipping
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP option: hostname = BOSCH-WAV28E93-abcdefghijkl (len 28)
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP options end, len 72, actual 64
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP (encap type 0xec03) mstype 0ff:ff:ff:ff:ff:ff
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP intf:guest dhcp proxy mode disabled
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP processing DHCP DISCOVER (1)
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP op: BOOTREQUEST, htype: Ethernet, hlen: 6, hops: 0
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP xid: 0x9f7c1233 (2675708467), secs: 0, flags: 0
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP chaddr: 68:a4:0e:70:16:fe
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP ciaddr: 0.0.0.0, yiaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 19:02:48.944: ab:cd:ef:gh:ij:kl DHCP siaddr: 0.0.0.0, giaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP received op BOOTREPLY (2) (len 294,vlan 0, port 1, encap 0xec03, xid 0x33127c9f)
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option len (including the magic cookie) 58
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: message type = DHCP OFFER
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: server id = 172.20.2.100
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: lease time = 21600 seconds
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: 58 (len 4) - skipping
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: 59 (len 4) - skipping
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: netmask = 255.255.255.0
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: gateway = 172.20.2.254
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP option: DNS server, cnt = 1, first = 8.8.8.8
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP options end, len 58, actual 64
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP intf:guest dhcp proxy mode disabled
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP processing DHCP OFFER (2)
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP op: BOOTREPLY, htype: Ethernet, hlen: 6, hops: 0
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP xid: 0x9f7c1233 (2675708467), secs: 0, flags: 0
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP chaddr: 68:a4:0e:70:16:fe
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP ciaddr: 0.0.0.0, yiaddr: 172.20.2.2
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP siaddr: 0.0.0.0, giaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 19:02:48.947: ab:cd:ef:gh:ij:kl DHCP server id: 172.20.2.100 rcvd server id: 172.20.2.100
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP received op BOOTREQUEST (1) (len 316,vlan 0, port 1, encap 0xec03, xid 0x33127c9f)
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP option len (including the magic cookie) 80
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP option: message type = DHCP REQUEST
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP option: 61 (len 15) - skipping
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP option: requested ip = 172.20.2.2
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP option: server id = 172.20.2.100
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP option: 55 (len 3) - skipping
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP option: hostname = BOSCH-WAV28E93-abcdefghijkl (len 28)
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP options end, len 80, actual 72
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP (encap type 0xec03) mstype 0ff:ff:ff:ff:ff:ff
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP intf:guest dhcp proxy mode disabled
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP processing DHCP REQUEST (3)
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP op: BOOTREQUEST, htype: Ethernet, hlen: 6, hops: 0
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP xid: 0x9f7c1233 (2675708467), secs: 0, flags: 0
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP chaddr: ab:cd:ef:gh:ij:kl
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP ciaddr: 0.0.0.0, yiaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP siaddr: 0.0.0.0, giaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP requested ip: 172.20.2.2
*DHCP Socket Task: Jul 20 19:02:48.949: ab:cd:ef:gh:ij:kl DHCP server id: 172.20.2.100 rcvd server id: 172.20.2.100
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP received op BOOTREPLY (2) (len 294,vlan 0, port 1, encap 0xec03, xid 0x33127c9f)
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option len (including the magic cookie) 58
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: message type = DHCP ACK
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: server id = 172.20.2.100
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: lease time = 21600 seconds
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: 58 (len 4) - skipping
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: 59 (len 4) - skipping
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: netmask = 255.255.255.0
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: gateway = 172.20.2.254
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP option: DNS server, cnt = 1, first = 8.8.8.8
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP options end, len 58, actual 64
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP intf:guest dhcp proxy mode disabled
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP processing DHCP ACK (5)
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP op: BOOTREPLY, htype: Ethernet, hlen: 6, hops: 0
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP xid: 0x9f7c1233 (2675708467), secs: 0, flags: 0
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP chaddr: 68:a4:0e:70:16:fe
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP ciaddr: 0.0.0.0, yiaddr: 172.20.2.2
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP siaddr: 0.0.0.0, giaddr: 0.0.0.0
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP server id: 172.20.2.100 rcvd server id: 172.20.2.100
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl Assigning Address 172.20.2.2 to mobile
*DHCP Socket Task: Jul 20 19:02:48.953: ab:cd:ef:gh:ij:kl DHCP success event for client. Clearing dhcp failure count for interface guest.

If anyone can point me to the solution, please do!

Best regards,

Joerg