Hi all, We have another problem/question related to VRRP. When the router connect to the setup has disabled MAC learning, the ARP table on the router doesn't have the virtual MAC for the VIP but the physical MAC of the interface on the VRRP master.
Tracing showed that GARP is sent from VIP with physical MAC of the interface: 22:33:52.620143 78:ac:44:1f:47:60 > ff:ff:ff:ff:ff:ff, ethertype 802.1Q (0x8100), length 46: vlan 101, p 0, ethertype ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 172.17.1.126 tell 172.17.1.3, length 28 22:33:52.620145 78:ac:44:1f:47:60 > ff:ff:ff:ff:ff:ff, ethertype 802.1Q (0x8100), length 46: vlan 102, p 0, ethertype ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 172.17.2.126 tell 172.17.2.3, length 28 22:33:58.461327 78:ac:44:1f:47:60 > 00:25:90:5f:67:45, ethertype 802.1Q (0x8100), length 60: vlan 101, p 0, ethertype ARP, Ethernet (len 6), IPv4 (len 4), Reply 172.17.1.3 is-at 00:00:5e:00:01:e7, length 42 22:33:59.485321 78:ac:44:1f:47:60 > 00:25:90:5f:67:45, ethertype 802.1Q (0x8100), length 60: vlan 101, p 0, ethertype ARP, Ethernet (len 6), IPv4 (len 4), Reply 172.17.1.3 is-at 00:00:5e:00:01:e7, length 42 This seems to be wrong. If I read the standard correctly (https://datatracker.ietf.org/doc/html/rfc3768, ch. 8.2), it should use the virtual router MAC address for GARP requests. MASTER conifg: # vppctl show vrrp vr [0] sw_if_index 26 VR ID 231 IPv4 state Master flags: preempt no accept yes unicast no priority: configured 200 adjusted 200 timers: adv interval 100 master adv 100 skew 21 master down 321 virtual MAC 00:00:5e:00:01:e7 addresses 172.17.1.3 peer addresses tracked interfaces VPP version (includes https://gerrit.fd.io/r/c/vpp/+/34815 ): # vppctl show version verbose Version: v21.06.0-2~g4ffc97bad Compiled by: suse Compile host: SUSE Compile date: 2022-02-21T13:42:14 Compile location: /root/vpp-21.06-release/vpp Compiler: GCC 7.5.0 Current PID: 6528 Is this a bug in VPP or is there a configuration parameter which I overlooked? Thanks for your help, BR/Mechthild
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