What happened?

@gandro reports that, after #23219, he tested the ip-masq-agent in an IPv4-only cluster and observes the following error:

Controller Status:      21/22 healthy
  Name                            Last success   Last error   Count   Message
  bpf-map-sync-cilium_ipmasq_v6   never          9s ago       12      loading pinned map /sys/fs/bpf/tc/globals/cilium_ipmasq_v6: no such file or directory   

Adding that the ip-masq-agent seems broken, with the IPv4 map not containing any CIDRs anymore.

To be investigated as soon as possible - Worst case, we'll need to revert IPv6 ip-masq-agent before we cut 1.14.

Cilium Version

main branch, on top of #23219