Hello, Alan! I'm sorry, I'm forget to add freebsd-stable@ to CC: list.
Yes, I'm using FreeBSD 13: 13.0-STABLE Today I have a native IPv6 access and my inet6 routing table is: # netstat -rn6 | grep -v -e lo0 Routing tables Internet6:Destination Gateway Flags Netif Expire default fe80::206:29ff:fee9:32a9%lan0 UG lan0 fd00:dead:beef:100::/64 link#5 U lan0 fe80::%lan0/64 link#5 U lan0 fe80::%bridge0/64 link#6 U bridge0
This means my default gateway is reachable via lan0.A node which link-local address fe80::2a0:98ff:fe1d:e270 is reachable via bridge0:
# ping -c 1 fe80::2a0:98ff:fe1d:e270%bridge0PING6(56=40+8+8 bytes) fe80::5a9c:fcff:fe10:ff9e%bridge0 --> fe80::2a0:98ff:fe1d:e270%bridge0 16 bytes from fe80::2a0:98ff:fe1d:e270%bridge0, icmp_seq=0 hlim=64 time=0.804 ms
But ping anyway sends packets via lan0.Also I tried to configure fd13:dead:beef::2 on bridge0, on corresponding node I configured fd13:dead:beef::1, and then run a command:
ping -6 -e fd13:dead:beef::1 google.comIn this way ping uses source IP address from bridge0 interface, but sends via lan0 and to next-hop fe80::206:29ff:fee9:32a9%lan0:
# tcpdump -epni lan0 icmp612:33:23.308763 8c:ec:4b:e9:28:23 > 00:06:29:e9:32:a9, ethertype IPv6 (0x86dd), length 70: fd13:dead:beef::2 > 2a00:1450:4010:c1e::8a: ICMP6, echo request, seq 52, length 16
I'm wrote a simple script to check this problem. I checked this script on image of VM from freebsd'site which FreeBSD-13.
Please see attached file. On 15/12/2021 21:32, Alan Somers wrote:
On Wed, Dec 15, 2021 at 11:16 AM KOT MATPOCKuH <[email protected]> wrote:Hello! In a man page for ping(8) and in it's help output I found option "-e": -e gateway Specifies to use gateway as the next hop to the destination. The gateway must be a neighbor of the sending node. I tried to use this argument, ping ignores this parameter and sends the packet via default gateway. For example I have a tun0 which has ipv6 default gw, and an established bridge0 which has available some LL addresses: Neighbor Linklayer Address Netif Expire S Flags fe80::2a0:98ff:fe1d:e270%bridge0 00:a0:98:1d:e2:70 bridge0 23h56m34s S R I tried to run: ping -6 -e FE80::2A0:98FF:FE1D:E270%bridge0 google.com But the packet was sent via tun0 interface. What is wrong with it? -- MATPOCKuHWhat version of FreeBSD are you using? There was a major change to ping's code in FreeBSD 13. Please show the output of 'freebsd-version' and 'netstat -rn'. -Alan
ping-e.sh
Description: application/shellscript
