Hi folks
Every time we upgrade OS on the Riverbed Steelhead and reload it the clients which get IP from a remote anchor WLC stop working. Local WLC shows 0.0.0.0 for guest clients until it is rebooted and DHCP suddently starts assigning IPs again. Not sure why but it seems like the connection of EoIP tunnel between the local and remote WLC drops (or at least the DHCP exchange) when the Riverbed reloads. Here are some logs which might relate to the issue however I found very limited information about the cause.
%MM-3-SEND_INET_FAILED: mm_mobile.c:3350 Unable to send Export Anchor request(for client 74:8d:08:7c:3b:6c): No Export Anchor found to
*apfReceiveTask: May 11 17:14:13.137: %MM-1-ANCHOR_UNAVAILABLE: mm_mobile.c:3142 All export anchors are down. Cannot anchor the client.74:8d:08:7c:3b:6c
debug client e0:9d:31:09:cf:98
apfMsConnTask_1: May 11 19:20:24.115: e0:9d:31:09:cf:98 Processing assoc-req station:e0:9d:31:09:cf:98 AP:10:bd:18:3c:68:10-00 thread:18f3dd70
*DHCP Socket Task: May 11 19:20:24.131: e0:9d:31:09:cf:98 DHCP received op BOOTREQUEST (1) (len 338,vlan 60, port 13, encap 0xec03, xid 0x11897d3f)
*DHCP Socket Task: May 11 19:20:24.131: e0:9d:31:09:cf:98 DHCP (encap type 0xec03) mstype 0ff:ff:ff:ff:ff:ff
*DHCP Socket Task: May 11 19:20:24.131: e0:9d:31:09:cf:98 DHCP dropping packet due to ongoing mobility handshake exchange, (siaddr 0.0.0.0, mobility state = 'apfMsMmQueryRequested'
*apfReceiveTask: May 11 19:20:26.933: e0:9d:31:09:cf:98 Attempting anchor export for mobile e0:9d:31:09:cf:98
Sending assoc-resp with status 12 station:e0:9d:31:09:cf:98 AP:10:bd:18:3c:68:10-01 on apVapId 2
Sending Assoc Response to station on BSSID 10:bd:18:3c:68:1e (status Assoc denied unspecified) ApVapId 2 Slot 1
Processing assoc-req station:e0:9d:31:09:cf:98 AP:0c:d9:96:6b:4a:e0-00 thread:18f3e148
Ignoring 802.11 assoc request from mobile pending deletion
*osapiBsnTimer: May 11 19:09:05.459: e0:9d:31:09:cf:98 apfMsExpireCallback (apf_ms.c:638) Expiring Mobile!
*apfReceiveTask: May 11 19:09:05.459: e0:9d:31:09:cf:98 apfMsExpireMobileStation (apf_ms.c:7394) Changing state for mobile e0:9d:31:09:cf:98 on AP 10:bd:18:3c:68:10 from Associated to Disassociated
↗ local WLC
Connection path: WAP---Switch--Riverbed---Router---MPLS Cloud---N7K---Guest WLC
