Getting a /56 from airtel (xstream fiber)

[chiraglol]

heya,

has anyone successfully gotten a /56 from airtel? it genuinely seems impossible.

i did mail them, and they made a ticket, sent someone over only for that guy and his senior to not know what IPv6 is, they didn't even know what a static IP is (only knew the price)

I'm currently on a 707GR1 (i have no plans to get a new router), with a nat66 config with a dynamic public /64 (that's all airtel assigns)

however, i feel like this setup is bound to break eventually, and probably adds some latency as well which is important for me to minimize because I'm gonna be using my pc remotely with parsec

 

[dhwaniraj]

I think nearly all ISPs in India are r3tarded when it comes to ipv6. Everyone assigns a dynamic /64 to their customers.
Though latency has nothing to do with static or dynamic prefix. I would suggest not doing nat66 and just assign global ipv6 to all your devices. And use ddns to update when the prefix changes. I doubt any isp will assign static prefix without making you pay.

 

[chiraglol]

latency has nothing to do with static or dynamic prefix

yep ik, i was talking about the latency nat66 adds

just assign global ipv6 to all your devices

is that even possible considering airtel assigns the entire network a single /64? i haven't really found a way to make IPv6 work other than a nat66 config

 

[dhwaniraj]

Share some screenshots of your router ipv6 settings. Generally, the prefix you recieve is assigned to your lan bridge and gets advertised using slaac. All clients in your local network that receive router advertisement assign themselves an ip address using the advertised prefix. This is my setup with bsnl and a Mikrotik router.

 

[chiraglol]

route table shows current nat66 config (done w iptables, thanks gemini since I barely understand iptables at times)

nat66 was a last resort for me as well, i have tried changing address mode to SLAAC, that no longer even assigns a /64 to my router, which it does with DHCP

 

[dhwaniraj]

Can you share wan ipv6 pages after you select slaac? Does it have an option for dhcpv6 cllient? If it does, don't request address. Only request prefix. See if that helps.

 

[chiraglol]

Choosing SLAAC on the WAN page makes both the request options disappear, saving that config no longer even assigns me a /64

# ip -6 addr show dev ppp0
31: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1480 state UNKNOWN
    inet6 fe80::fac4:f3ff:fec4:d477/10 scope link
       valid_lft forever preferred_lft forever

changing it back to DHCP (i.e. my original configuration) does seem to work:

# ip -6 addr show dev ppp0
31: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1480 state UNKNOWN
    inet6 beep:boop:beep:boop::5:beep/64 scope global dynamic
       valid_lft 86311sec preferred_lft 86311sec
    inet6 fe80::fac4:f3ff:fec4:d477/10 scope link
       valid_lft forever preferred_lft forever

 

[dhwaniraj]

Try requesting only prefix.