RHEL 7 hosts which have received an ICMP Redirect never expire the entry from their route cache.
# ip route show cache | wc -l 0 # cat /proc/net/rt_cache | wc -l 0 # ip route get 10.20.30.10 10.20.30.10 via 192.168.100.10 dev eth1 src 192.168.100.113 cache <redirected>
- Red Hat Enterprise Linux 7
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