what's the meaning of the output.

[jianhaiqing]

tcpretrans -l -s -a

Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 296.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 297.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 298.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 299.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 300.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 301.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 302.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 303.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 304.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 305.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 306.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 307.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 308.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 309.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 310.
Use of uninitialized value $retran_skb in string eq at ./tcpretrans line 188, <TCP_LIVE> line 311

I really appreciate what you have done. Hope i can share what i have done to others and they're helpful.