4 ms·

I strongly suggest you disable ipv6, as nothing will break by disabling it but many things break with it enabled.

by nikanj 1y ago

indigo945 1y ago
Alternatively, disable ipv4. The same statement holds true.
- ZiiS 1y ago
  Unfortunately this is not true, loads of cool techy stuff (Sentry, GitHub) etc still don't work properly on IPv6, less techy stuff really didn't care at all.
  - zokier 1y ago
    You can use nat64 to talk to legacy networks. Ipv6-only networks (with nat64 or 464xlat etc) are becoming increasingly popular. There is also this new concept called "ipv6-mostly network" that is getting rolled out: https://www.ietf.org/archive/id/draft-ietf-v6ops-6mops-02.html https://www.ietf.org/archive/id/draft-ietf-v6ops-6mops-02.ht...
- ta1243 1y ago
  Lots of things will break if you disable ipv4, including my work provided zscaler windows laptop (and not break in the good way where it fails open when you block traffic to zscaler nodes on your router) Very little will break if you disable ipv6
  - denkmoon 1y ago
    Enterprise malware not doing v6 properly hardly counts, it’s a good day for them when they don’t just bsod your entire network.
  - mrweasel 1y ago
    A lot of stuff breaks when you run Zscaler.
    - ta1243 1y ago
      Absolutely, yet it's a requirement for many people.
lxgr 1y ago
That's not true anymore. IPv6 allows for more direct connections for services like VoIP or Tailscale, since UDP hole punching between two firewalled public IPv6 addresses usually just works, but doesn't between two clients both behind a "port-restricted cone" or "symmetric" NAT. As a result, connections have to be relayed, which increases latency and is just outright infeasible for some non-profit services that don't have a budget for relaying everyone's traffic. Anecdotally, I've also heard that you can get better routing via IPv6 on IPv4-via-NAT-only providers these days, as the provider's CG-NAT might be topologically farther away than the IPv6 server you're connecting to.
mrweasel 1y ago
That's not really true anymore. I've used a connection with both IPv4 and 6 for the past two years. There's a number of times where my stuff magically works, whiles others have issues, because my traffic is mostly over IPv6. Not once have I had an issue because my setup is dual stacked.
- patrakov 1y ago
  This is still true for ISPs that don't monitor their IPv6 connectivity. I was forced to disable IPv6 recently because of this: https://www.reddit.com/r/ipv6/comments/1nf3ytq/how_do_i_complain_about_partial_ipv6_connectivity/ https://www.reddit.com/r/ipv6/comments/1nf3ytq/how_do_i_comp... And before you say "change the ISP": Globe is the only one that does not refuse to provide services to foreigners and does not lock you up into a 24-month non-cancellable contract, which is longer than any available non-resident visa.
  - mrweasel 1y ago
    That's not really an IPv6 issue, but an ISP issue. My old ISP didn't monitor anything and relies on customers to call them up and explain that their connection is down. Sometimes tell them that their connection to entire towns are down, because they don't know. I'm fairly fortunate that my ISP not only offers IPv6, but also knows how to run their network. Denmark has plenty of ISP that doesn't provide IPv6, don't know how to run a network or some many cases both.

I strongly suggest you disable ipv6, as nothing will break by disabling it but many things break with it enabled.

by nikanj 1y ago

I strongly suggest you disable ipv6, as nothing will break by disabling it but many things break with it enabled.

indigo945 1y ago

Alternatively, disable ipv4. The same statement holds true.

ZiiS 1y ago
Unfortunately this is not true, loads of cool techy stuff (Sentry, GitHub) etc still don't work properly on IPv6, less techy stuff really didn't care at all.
- zokier 1y ago
  You can use nat64 to talk to legacy networks. Ipv6-only networks (with nat64 or 464xlat etc) are becoming increasingly popular. There is also this new concept called "ipv6-mostly network" that is getting rolled out: https://www.ietf.org/archive/id/draft-ietf-v6ops-6mops-02.html https://www.ietf.org/archive/id/draft-ietf-v6ops-6mops-02.ht...
ta1243 1y ago
Lots of things will break if you disable ipv4, including my work provided zscaler windows laptop (and not break in the good way where it fails open when you block traffic to zscaler nodes on your router) Very little will break if you disable ipv6
- denkmoon 1y ago
  Enterprise malware not doing v6 properly hardly counts, it’s a good day for them when they don’t just bsod your entire network.
- mrweasel 1y ago
  A lot of stuff breaks when you run Zscaler.
  - ta1243 1y ago
    Absolutely, yet it's a requirement for many people.

lxgr 1y ago

That's not true anymore. IPv6 allows for more direct connections for services like VoIP or Tailscale, since UDP hole punching between two firewalled public IPv6 addresses usually just works, but doesn't between two clients both behind a "port-restricted cone" or "symmetric" NAT. As a result, connections have to be relayed, which increases latency and is just outright infeasible for some non-profit services that don't have a budget for relaying everyone's traffic. Anecdotally, I've also heard that you can get better routing via IPv6 on IPv4-via-NAT-only providers these days, as the provider's CG-NAT might be topologically farther away than the IPv6 server you're connecting to.

mrweasel 1y ago

That's not really true anymore. I've used a connection with both IPv4 and 6 for the past two years. There's a number of times where my stuff magically works, whiles others have issues, because my traffic is mostly over IPv6. Not once have I had an issue because my setup is dual stacked.

patrakov 1y ago
This is still true for ISPs that don't monitor their IPv6 connectivity. I was forced to disable IPv6 recently because of this: https://www.reddit.com/r/ipv6/comments/1nf3ytq/how_do_i_complain_about_partial_ipv6_connectivity/ https://www.reddit.com/r/ipv6/comments/1nf3ytq/how_do_i_comp... And before you say "change the ISP": Globe is the only one that does not refuse to provide services to foreigners and does not lock you up into a 24-month non-cancellable contract, which is longer than any available non-resident visa.
- mrweasel 1y ago
  That's not really an IPv6 issue, but an ISP issue. My old ISP didn't monitor anything and relies on customers to call them up and explain that their connection is down. Sometimes tell them that their connection to entire towns are down, because they don't know. I'm fairly fortunate that my ISP not only offers IPv6, but also knows how to run their network. Denmark has plenty of ISP that doesn't provide IPv6, don't know how to run a network or some many cases both.