#cgnat

Spent 3 days on a WireGuard tunnel that would not handshake? Your ISP put you behind CGNAT. Port forwarding is dead. Tailscale and ZeroTier use UDP hole punching and https://www.valtersit.com/guides/networking/tailscale_zerotier-why_youre_fighting_cgnat-and-losing/ #networking #tailscale #cgnat

@Arusekk@infosec.exchange I'll be able to go #IPv6 once it's mandatory. Sadly it ain't but in fact many applications mandate #IPv4 to this day…I unsarcastically want #IPv8 (minus the obvious bullshit!) The only reason IPv6 traffic is increasing is propably becaise #MNO|s and #MVNOs still do #CGNAT on #RFC1918 address spaces, thus bricking #VPN|s. This was literally the reason I had to setup #DualStack at some company!