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IPv6 for Business — Do You Need It Yet

IPv6 is no longer exotic: major UK ISPs support dual-stack on many business products. The practical question is whether you must actively use it today — or simply avoid breaking when carriers expand IPv6-only trials abroad.

Next step: Ask for dual-stack on new circuits. Contact us if legacy apps “only work on IPv4”.

Dual-stack in practice

Most SMEs run IPv4 + IPv6 together: clients try both; DNS returns A and AAAA records. Ensure your firewall default-deny applies to IPv6 interfaces — a common gap is “IPv4 locked down, IPv6 wide open”.

When IPv6 helps now

Peering-sensitive workloads, some mobile networks and future-proofing IoT VLANs benefit. If you only browse and use SaaS, IPv4 with static IPv4 may remain simpler for VPN landing zones.

Common pitfalls

Broken AAAA records, outdated VPN clients and cheap CPE with immature IPv6 DHCP-PD cause “works on 4G, fails on office Wi-Fi” bugs. Document rollback: disable AAAA temporarily while vendors patch.

Planning horizon

Treat IPv6 as hygiene on new installs — request prefix delegation if you subnet VLANs for voice, POS and guests.

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