Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Hamada_Tabosha_'s avatar
Hamada_Tabosha_
Icon for Nimbostratus rankNimbostratus
Nov 03, 2013

VLAN group

Dears , I have red about the vlan group , they mentioned the following : ( 1- VLAN groups are intended for load balancing traffic in a Layer 2 network, when you want to minimize the reconfiguration o...
design
nitass_89166's avatar
nitass_89166
Icon for Noctilucent rankNoctilucent
May 23, 2015

A packet capture on the F5 shows that when the issue occurs, the BIG-IP uses "127.0.0.1" as the source address in its response packet, making the SNMP response invalid.

 

have you opened a support case? i do see this known issue but not sure if it matches yours. it is discovered in 11.5.0 and is fixed in 12.0.0.

 

ID458585 BIG-IP SNMP-response has wrong source address of localhost (127.0.0.1)

 

  • JG's avatar
    JG
    Icon for Cumulonimbus rankCumulonimbus
    May 23, 2015
    I did open a case, but it hasn't been taken up by anybody yet. I just thought I might be able to get some help sooner here. I must say that I have not been disappointed. Thanks, nitass! I am on v11.6.0 EHF4 and I suspect that the issue is due to the same bug. I hope there will be a hotfix for this issue soon and it should really not wait until v12, as it has impact on application services.