Hi there,

For more than 8 years now, OPNsense is driving innovation through
modularising and hardening the open source firewall, with simple
and reliable firmware upgrades, multi-language support, fast adoption
of upstream software updates as well as clear and stable 2-Clause BSD
licensing.

We thank all of you for helping test, shape and contribute to the project!
We know it would not be the same without you.  <3

Download links, an installation guide[1] and the checksums for the images
can be found below as well.

o Europe: https://opnsense.c0urier.net/releases/23.1/
o US East Coast: https://mirror.wdc1.us.leaseweb.net/opnsense/releases/23.1/
o US West Coast: https://mirror.sfo12.us.leaseweb.net/opnsense/releases/23.1/
o South America: http://mirror.ueb.edu.ec/opnsense/releases/23.1/
o East Asia: https://mirror.ntct.edu.tw/opnsense/releases/23.1/
o Full mirror list: https://opnsense.org/download/

Here are the full patch notes against 22.7.10:

o system: replaced log_error() use with log_msg() and adjusted logging levels accordingly
o system: introduced a service boot log
o system: the LibreSSL flavour has been discontinued
o system: simplify gateway monitoring setup code
o system: add option to skip gateway monitor host route
o system: populate /etc/hosts file with IPv6 addresses too
o system: simplify host route creation
o system: merge system_staticroutes_configure() into system_routing_configure()
o system: do not yield process after calling shutdown command
o system: apply tunables during late boot in case a module was loaded depending on them to be set to a specific value
o system: show size of ZFS ARC (adaptive replacement cache) in system widget
o interfaces: heavy cleanup of the wireless device integration
o interfaces: use 802.1ad protocol for stacked VLAN parent (QinQ)
o interfaces: GIF and GRE now support subnet-based IPv6 configurations instead of always falling back to a point-to-point (/128) setup
o interfaces: GIF and GRE now disable IPv6 on IPv4 tunnels (contributed by Maurice Walker)
o interfaces: add PPPoEv6 mode to prevent IPv6 CP negotiation over PPPoE in other IPv6 modes
o interfaces: add support for SLAAC WAN interfaces without DHCPv6 (contributed by Maurice Walker)
o interfaces: register LAGG, PPP, VLAN and wireless devices as plugins
o interfaces: simplified get_real_interface() function
o interfaces: removed obsolete "defaultgw" files
o interfaces: simplified rc.linkup script
o interfaces: improve IP address cache behaviour in rc.newwanip(v6) scripts
o interfaces: converted virtual IPs to MVC/API
o interfaces: add MAC filtering to packet capture
o interfaces: convert ARP/NDP pages to server-side searchable variant
o interfaces: create null route for DHCPv6 delegated prefix
o interfaces: tighten the concept of hardware interfaces and pull supported plugin devices into assignments page automatically
o firewall: remove deprecated "Dynamic state reset" mechanic
o firewall: invalidate port forward rule entry when no target is specified
o firewall: show automated "port 0" rule as actual port "0" on PHP 8
o firewall: hide deprecated source OS rule setting under advanced
o reporting: fix incompatible regex syntax in FreeBSD 13.1 for firewall state health statistics
o intrusion detection: keep grid to prevent widgets being removed
o intrusion detection: reload grid after log drop (contributed by kulikov-a)
o ipsec: disable charon.install_routes completely in case upstream would implement it for FreeBSD later on
o ipsec: move user PSK (pre-shared key) and static PSK items to new MVC/API implementation
o ipsec: migrate existing configuration from ipsec.conf to swanctl.conf
o ipsec: add a new independent connections MVC/API component to manage IPsec in a layout matching swanctl.conf syntax more closely
o ipsec: rewrote lease status page in MVC/API
o ipsec: add configurable "unique" setting to phase 1
o monit: support start timeout setting (contributed by spoutin)
o openvpn: add unique daemon name to each instance
o unbound: add DNS statistics collector and reporting frontend
o unbound: safeguard retrieval of blocklist shortcode
o unbound: add exact domain blocking
o mvc: call plugins_interfaces() optionally on service reconfigure
o mvc: match UUID for multiple values (contributed by kulikov-a)
o mvc: convert setBase() to an upsert operation
o mvc: change default sorting to case-insensitive
o mvc: fix IntegerField minimum value (contributed by xbb)
o mvc: add TextField tests (contributed by agh1467)
o ui: assorted improvements in bootgrid and form controls
o ui: switch to pure JSON data in bootgrids
o plugins: acme-client 3.15[2]
o plugins: os-bind 1.25[3]
o plugins: os-ddclient 1.11[4]
o plugins: os-dyndns end of life note moves to 23.7
o plugins: os-freeradius 1.9.22[5]
o plugins: os-upnp 1.5[6]
o plugins: os-stunnel fixes missing include in certificate script
o plugins: os-wireguard switches to kernel module with a separate os-wireguard-go variant available for installation to keep the old behaviour
o plugins: os-sslh 1.0[7] (contributed by agh1467)
o src: assorted FreeBSD 13 stable fixes for e.g. bpf, bridge, bsdinstall ifconfig, iflib, ipfw, ipsec, lagg, netmap, pf, route and vlan components
o ports: php 8.1.13[8]
o ports: sqlite 3.40.1[9]

Migration notes, known issues and limitations:

o LibreSSL flavour has been discontinued.  Switch to OpenSSL flavour to proceed with the upgrade.
o StrongSwan IPsec configuration now uses the preferred swanctl.conf instead of the deprecated ipsec.conf which could lead to connectivity issues in ambiguous cases.  Subtle bugs cannot be ruled out as well so please raise an issue on GitHub to be able to investigate each case.
o The new IPsec connections pages and API create an idependent set of connections following the design of swanctl.conf.  Legacy tunnel settings cannot be managed from the API and are not migrated.