Ubuntu routing problem-CodePudding

I can on a 192.168.5.83 machine 192.168.2.59, but add -r can ping ping parameters, a gateway is 192.168.5.1, can ping gateway, is this why? Which bosses can explain

Two results are as follows

Ping 192.168.2.59
PING 192.168.2.59 (192.168.2.59) 56 (84) bytes of data.

Ping - R 192.168.2.59
PING 192.168.2.59 (192.168.2.59) 56 (124) bytes of data.
64 bytes from 192.168.2.59: icmp_seq=1 TTL=63 time=9.66 ms
RR: 192.168.5.83
192.168.2.1
192.168.2.59
192.168.2.59
192.168.5.1
192.168.5.83

64 bytes from 192.168.2.59: icmp_seq=2 TTL=63 time=8.30 ms (same route)
64 bytes from 192.168.2.59: icmp_seq=3 TTL=63 time=8.40 ms (same route)

Routing information is as follows:
The route - n
The Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.5.1 0.0.0.0 UG 0 0 0 eno1
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eno1
172.17.0.0 0.0.0.0 255.255.0.0 U 0 0 0 docker0
192.168.5.0 0.0.0.0 255.255.255.0 U 0 0 0 eno1

CodePudding user response:

Speculation should be the cause of the firewall, because when you ping - R packets through a router is a router with the routing information, at this time of the IP packet length of baotou, it is not ordinary package 20, may the firewall to this kind of bag did not judge processing mechanism, data packets can be smoothly delivered to each other, each other can give response,

CodePudding user response:

reference 1st floor kinkon007 response:

speculation should be the cause of the firewall, because when you ping - R the packets through a router is a router with the routing information, at this time of the IP packet length of baotou, it is not ordinary package 20, may the firewall to this kind of bag did not judge processing mechanism, data packets can be smoothly delivered to each other, each other can give response,

On machines with 59 83 seen iptables four chain, no firewall, 5.1 the router is not on, can't see, I found I was in the 83 machines, static IP address is set to DHCP restart when you can not add -r ping 59, should and firewall doesn't matter much