[root@bogon ~]# ip netns exec left bash ABRT has detected 1 problem(s). For more info run: abrt-cli list --since 1627875894 [root@bogon ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 245: veth_l1@if246: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether ae:ca:dd:d3:fa:05 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 192.168.0.2/24 scope global veth_l1 valid_lft forever preferred_lft forever [root@bogon ~]# ip link set veth_l1 up [root@bogon ~]# scapy INFO: Can‘t import matplotlib. Won‘t be able to plot. INFO: Can‘t import PyX. Won‘t be able to use psdump() or pdfdump(). WARNING: No route found for IPv6 destination :: (no default route?) WARNING: IPython not available. Using standard Python shell instead. AutoCompletion, History are disabled. aSPY//YASa apyyyyCY//////////YCa | sY//////YSpcs scpCY//Pp | Welcome to Scapy ayp ayyyyyyySCP//Pp syY//C | Version 2.4.3 AYAsAYYYYYYYY///Ps cY//S | pCCCCY//p cSSps y//Y | https://github.com/secdev/scapy SPPPP///a pP///AC//Y | A//A cyP////C | Have fun! p///Ac sC///a | P////YCpc A//A | Craft me if you can. scccccp///pSP///p p//Y | -- IPv6 layer sY/////////y caa S//P | cayCyayP//Ya pY/Ya sY/PsY////YCc aC//Yp sc sccaCY//PCypaapyCP//YSs spCPY//////YPSps ccaacs >>> sendp(Ether()/IP(src="192.168.0.2", dst="10.0.0.2")/TCP(sport=1024, dport=2048, flags=0x02, seq=100), iface="veth_l1") WARNING: No route found (no default route?) WARNING: No route found (no default route?) . Sent 1 packets. >>>
添加路由
[root@bogon ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000 link/ipip 0.0.0.0 brd 0.0.0.0 245: veth_l1@if246: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state LOWERLAYERDOWN group default qlen 1000 link/ether ae:ca:dd:d3:fa:05 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 192.168.0.2/24 scope global veth_l1 valid_lft forever preferred_lft forever [root@bogon ~]# ip r add 0.0.0.0/0 dev veth_l1 scope link [root@bogon ~]# ip r default dev veth_l1 scope link linkdown 192.168.0.0/24 dev veth_l1 proto kernel scope link src 192.168.0.2 linkdown You have new mail in /var/spool/mail/root [root@bogon ~]# ip link set veth_l1 up [root@bogon ~]# ip r default dev veth_l1 scope link linkdown 192.168.0.0/24 dev veth_l1 proto kernel scope link src 192.168.0.2 linkdown [root@bogon ~]#