_svcj_ipaddrs option for FreeBSD 15 service jails: github.com/freebsd/freebsd-src

it works like this:

inetd_enable=YES
inetd_svcj=YES
inetd_svcj_options="net_basic"
inetd_svcj_ipaddrs="::1 127.0.0.1 2001:db8::1"

a few obvious use-cases:

* fix services that don't let you configure bind address

* fix services that can only bind to a single IP address, meaning they can't bind to both an IPv4 and IPv6 address

* easily set outgoing IP address on a per-service basis

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