Routing Issue : Redirect Host(New nexthop: Gateway IP
What does it mean when ping output returns 'Redirect Host(New nexthop: )' Solution Verified - Updated 2014-01-16T14:43:23+00:00 - English moshe@gaspode:~(1894)-> ping -c 3 dibbler PING dibbler.gateway.2wire.net (192.168.1.65) 56(84) bytes of data. From carrot (192.168.1.66): icmp_seq=1 Redirect Host(New nexthop: dibbler (192.168.1.65)) 64 bytes from dibbler (192.168.1.65): icmp_req=1 ttl=64 time=38.6 ms 64 bytes from dibbler (192.168.1.65): icmp_req=1 ttl=63 time=38.6 ms (DUP!) The new router must be reachable through a directly connected network. 2. The new route must be from the existing router for the destination in question. 3. The new route cannot specify the host as the next-hop address. 4. The redirect route must not point to an address on the local subnet. 5. The host must be configured to accept redirects. From Node 1 ping test (hopefully to the right thing?): pi@rpi2fr ~ $ ping 10.20.41.1 PING 10.20.41.1 (10.20.41.1) 56(84) bytes of data. From 10.20.41.0: icmp_seq=2 Redirect Host(New nexthop: 10.20.41.1) From Node 2 ping test: steve@mark-mint ~ $ ping 10.20.38.1 PING 10.20.38.1 (10.20.38.1) 56(84) bytes of data. [root@scratch ~]# ping -c5 192.168.0.20 PING 192.168.0.20 (192.168.0.20) 56(84) bytes of data. 64 bytes from 192.168.0.20: icmp_seq=1 ttl=63 time=0.501 ms From 192.168.2.1 icmp_seq=2 Redirect Host(New nexthop: 192.168.0.20) From 192.168.2.1: icmp_seq=2 Redirect Host(New nexthop: 192.168.0.20) 64 bytes from 192.168.0.20: icmp_seq=2 ttl=64 time=0 $ ping -c15 10.1.1.12 PING 10.1.1.12 (10.1.1.12): 56 data bytes Request timeout for icmp_seq 0 92 bytes from router2.mydomain.com (10.1.2.1): Redirect Host(New addr: 10.1.1.12) Vr HL TOS Len ID Flg off TTL Pro cks Src Dst 4 5 00 0054 81d4 0 0000 3f 01 e2b3 10.1.2.20 10.1.1.12 Request timeout for icmp_seq 1 92 bytes from router2.mydomain.com (10 They can communicate to each other, and can ping servers behind them, but not healthily. When pinging from ServerA to a server within serverB's subnet I get the following: # ping 10.0.1.87 PING 10.0.1.87 (10.0.1.87) 56(84) bytes of data. From 169.254.255.1: icmp_seq=1 Redirect Host(New nexthop: 10.0.1.87)
2020-6-15 · tcpdump showed me there are some ICMP-redirect in my network (KVM virtual-machines, bridged network). I decided to take a closer look on them and how my system behaves and how it looks. I found it doesn't work as it should: Let say I'm on 1.1.1.1 and I ping 2.2.2.2: # ping 2.2.2.2 PING 2.2.2.2 (2.2.2.2) 56(84) bytes of data. 64 bytes from 2.2.2.2: icmp_seq=1 ttl=63 time=0.569 ms From 4.4.4.4
2020-6-15 · tcpdump showed me there are some ICMP-redirect in my network (KVM virtual-machines, bridged network). I decided to take a closer look on them and how my system behaves and how it looks. I found it doesn't work as it should: Let say I'm on 1.1.1.1 and I ping 2.2.2.2: # ping 2.2.2.2 PING 2.2.2.2 (2.2.2.2) 56(84) bytes of data. 64 bytes from 2.2.2.2: icmp_seq=1 ttl=63 time=0.569 ms From 4.4.4.4 EINPROGRESS (Operation now in progress) - … 2017-4-21 · 后台程序出现： connect(8, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("122.122.122.122")}, 16) = -1 EINPROGRESS (Operation now in progress) poll ICMP Redirect using Tun0 - OpenVPN Support Forum
Ubuntu Networking :: "Redirect Host" In Ping Messages?
校园网 dns ip 劫持？ - V2EX 2018-8-19 · 问与答 - @ifwangs - 校园网支持 v6，于是想找个同时支持 v4 和 v6 的 dns 在手机上用，就试了下科大的 dns。但是 ping 发现响应来自一个内网 ip。。。[shproc] Process[pid=80 [SOLVED] Problem with ICMP Redirects - Tech Support Forum