Re: ipv6 and rc.conf questions
If memory serves me right, Yoshinobu Inoue wrote: And now I think the problem is that entry name, rtadvd_enable="NO" is not intuitive for users. So how about changing the name to something like, ipv6_to_be_defaultrouter="NO" and if it is set to YES, then rc.network6 invoke rtadvd (and possibly do other works)? Please give me comments if it seems reasonable or not, and also if the name is good or bad. I think that I know just enough about IPv6 to be dangerous, at this point. With that in mind, I think we should keep the name (because that describes exactly what it does), and just change the default to "YES". Cheers, Bruce. PGP signature
Re: ipv6 and rc.conf questions
I think that I know just enough about IPv6 to be dangerous, at this point. With that in mind, I think we should keep the name (because that describes exactly what it does), and just change the default to "YES". OK, I'll choose the option, and also add some more description for "rtadvd_enable". Thanks, Yoshinobu Inoue To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: ipv6 and rc.conf questions
Hi, Wmmm, should rtadvd always be invoked when 'ipv6_gateway_enable="YES" ? Hmmm...two things come to mind. 1) What happens if there are two routers running rtadvd on a single subnet? 2) Are there environments in which a netadmin might not want to use router advertisements? (1): It is OK. Host randomly choose one of routers as its default router, and other routers are also kept as backup default routers. Host always send its packet to the default router, and if it is not correct router for the destination, then the packet is just redirected to the correct router. (2): Yes there is. Usually it is desirable that only upstream router invoke rtadvd to suppress too many redirects. In following case, only R-backbone should invoke rtadvd. (But there will be no serious problem even if R-local also invoke rtadvd.) backbone | R-backbone | --- my subnet | R-local | -- just one or two subnets But if you have more than 2 upstream routers, it might be desirable that either upstream router invoke rtadvd as redundancy. - backbone | | R-backbone1 R-backbone2 | | -- my subnet Yoshinobu Inoue I have this fuzzy feeling that always invoking rtadvd on routers might not be a good idea, but that perhaps making it the default might be good (right now, rtadvd is turned off by default). Bruce. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: ipv6 and rc.conf questions
Wmmm, should rtadvd always be invoked when 'ipv6_gateway_enable="YES" ? Oh, I need to conclude about this. (2): Yes there is. Usually it is desirable that only upstream router invoke rtadvd to suppress too many redirects. In following case, only R-backbone should invoke rtadvd. (But there will be no serious problem even if R-local also invoke rtadvd.) backbone | R-backbone | --- my subnet | R-local | -- just one or two subnets I have this fuzzy feeling that always invoking rtadvd on routers might not be a good idea, but that perhaps making it the default might be good (right now, rtadvd is turned off by default). Bruce. To think about the above case, always enabling rtadvd might not be good idea. And now I think the problem is that entry name, rtadvd_enable="NO" is not intuitive for users. So how about changing the name to something like, ipv6_to_be_defaultrouter="NO" and if it is set to YES, then rc.network6 invoke rtadvd (and possibly do other works)? Please give me comments if it seems reasonable or not, and also if the name is good or bad. Thanks, Yoshinobu Inoue To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
ipv6 and rc.conf questions
Hi, I have been playing with IPv6 on a few machines and I must say that it is very easy to get the basic IPv6 configuration on the "endpoints" ie. machines with just a ethernet connection. Just a line with 'ipv6_enable="YES"' /etc/rc.conf and it is done. But how do you configure an IPv6 in IPv4 tunnel in rc.conf? I can do it on the commandline, I'm just trying to figure out how to do it in rc.conf. I can get the IPv4 part configured with something like this: gif_interfaces="gif0" gifconfig_gif0="146.64.84.9 146.64.8.68" But how/where do you configure the IPv6 part of the tunnel? Do you have to put it in the network_interfaces= section where the normal IPv4 configuration is done? Another question, how do you add a default IPv6 route in rc.conf? There is an ipv6_default_interface= variable, but from the comments it looks like it is only meant for link local multicast addresses. John -- John Hay -- [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: ipv6 and rc.conf questions
Hi, Hi, I have been playing with IPv6 on a few machines and I must say that it is very easy to get the basic IPv6 configuration on the "endpoints" ie. machines with just a ethernet connection. Just a line with 'ipv6_enable="YES"' /etc/rc.conf and it is done. I'm glad to know that is working. :-) But how do you configure an IPv6 in IPv4 tunnel in rc.conf? I can do it on the commandline, I'm just trying to figure out how to do it in rc.conf. I can get the IPv4 part configured with something like this: gif_interfaces="gif0" gifconfig_gif0="146.64.84.9 146.64.8.68" But how/where do you configure the IPv6 part of the tunnel? Do you have to put it in the network_interfaces= section where the normal IPv4 configuration is done? After gif tunnel is configured by the above setup, you can just use ifconfig to assigne any IPv4 and/or IPv6 addresses to the gif p2p link. Such as, ifconfig gif0 10.0.0.1 10.0.0.2 netmask 255.255.255.0 ifconfig gif0 inett6 fec0:0:0:1000::1 fec0:0:0:1000::2 prefixlen 64 alias However, an IPv6 machine already has each IPv6 link local address on all of its interfaces by default, so it is found that no more additional IPv6 addr is necessary on p2p links. When you ping6 on a gif tunnel, you will see replies from IPv6 link local addresses of local machin and remote machine like below. (if the tunnel is setup correctly on each side.) hoge% ping6 ff02::1%gif0 PING6(56=40+8+8 bytes) fe80::200:eff:fe2e:dfe1 -- ff02::1 16 bytes from fe80::200:eff:fe2e:dfe1%lo0, icmp_seq=0 hlim=64 time=5.2 ms 16 bytes from fe80::200:e2ff:fe0d:bd18%gif0, icmp_seq=0 hlim=64 time=22.185 ms(DUP!) 16 bytes from fe80::200:eff:fe2e:dfe1%lo0, icmp_seq=1 hlim=64 time=8.127 ms 16 bytes from fe80::200:e2ff:fe0d:bd18%gif0, icmp_seq=1 hlim=64 time=33.705 ms(DUP!) ^C --- ff02::1%gif0 ping6 statistics --- 2 packets transmitted, 2 packets received, +2 duplicates, 0% packet loss round-trip min/avg/max = 5.2/17.304/33.705 ms If you need to reach other addrs over the tunnel, then, -just assigne IPv6 route to the gif tunnel using "route add -inet6 " command. or -enable following lines on each end of machines, and reboot them. ipv6_gateway_enable="YES" ipv6_router_enable="YES" If you did update and make world recently, please check /usr/share/examples/IPv6/USAGE. There will be more detailed info. A handbook chapter version is now under preparation. Another question, how do you add a default IPv6 route in rc.conf? There is an ipv6_default_interface= variable, but from the comments it looks like it is only meant for link local multicast addresses. In IPv6, a host's default router is automatically registered by receiving Router Advertisement messages from routers. To let routers send Router Advertisement, you need to invoke rtadvd on your router. It will be available by enabling the following config line on the router. rtadvd_enable="YES" If you want to enable it after the reboot, then please invoke rtadvd as root, and give it list of interface names to which you want Router Advertisement messages to be sent over. Such as, rtadvd ed0 ed1 ep0 ep1 Wmmm, should rtadvd always be invoked when 'ipv6_gateway_enable="YES" ? Cheers, Yoshinobu Inoue To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
