아래 발생시
net_ratelimit: 14 callbacks suppressed
아래와 같이 설정
sysctl -w net.ipv4.neigh.default.gc_thresh1=4096
sysctl -w net.ipv4.neigh.default.gc_thresh2=8192
sysctl -w net.ipv4.neigh.default.gc_thresh3=16384
sysctl -p
sysctl -a |grep net.ipv4.neigh.default.gc_thresh
/etc/sysctl.conf
net.ipv4.neigh.default.gc_thresh1 = 4096
net.ipv4.neigh.default.gc_thresh2 = 8192
net.ipv4.neigh.default.gc_thresh3 = 16384