请问下面是什么问题引起的？

Mar 30 22:05:50 ld1 kernel: IPVS: ip_vs_send_async error
Mar 30 22:06:30 ld1 last message repeated 11 times
Mar 30 22:06:30 ld1 last message repeated 16 times
Mar 30 22:06:34 ld1 heartbeat[4862]: WARN: 1 lost packet(s) for [ld2] [1118793:1118795]
Mar 30 22:06:34 ld1 heartbeat[4862]: info: No pkts missing from ld2!

难道是bug?
我的系统是rhas4.4 ipvsadm-1.24-6

thx :)