0d.0b0d.0b0d.0b0d.0b0d.0b0d - Telnet

[neidlein.p]

Hi community,

we have a funny thing on a ISR4331

xxx#ping ipv6 www.cisco.com
% Unrecognized host or address, or protocol not running.

xxx#telnet www.cisco.com 80
Trying 0d.0b0d.0b0d.0b0d.0b0d.0b0d, 80 ...
% Connection aborted

xxx#ping www.cisco.com
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 104.97.66.117, timeout is 2 seconds:
.!!..
Success rate is 40 percent (2/5), round-trip min/avg/max = 86/162/239 ms
xxx#

xxx# show version | incl 4b
Cisco IOS XE Software, Version 03.16.04b.S - Extended Support Release
Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.5(3)S4b, RELEASE SOFTWARE (fc1)
System image file is "bootflash:isr4300-universalk9.03.16.04b.S.155-3.S4b-ext.SPA.bin"
xxx#

When we try to telnet to a endhost it's trying a strange address.

Is this a bug ? do you observe something similar on usr ISR4k ?

[estebanzarikian]

Hi! I have the same problem, were you able to fix it?

I tried globally disabling IPv6 with the no ipv6 unicast-routing command, also changed name servers, tried with different hostnames. Asides from telnet it also seems to affect the http client from IP SLA which I use regularly also. Any ideas?

Best regards,

Esteban

[cf2491@att.com]

I was having the same issue with telnet.  I added /ipv4 to the end of the end of the command and it worked fine.

router>tel cisco.com
Trying 0d.0b0d.0b0d.0b0d.0b0d.0b0d ...
% Connection aborted

router>tel cisco.com /ipv4
Trying cisco.com (72.163.4.185)...