[PATCH pve-firewall 1/2] Revert "pve-firewall.service: update-alternative ip-/eb- tables to legacy versions"

[Ethan Zuo <yuxuan.zuo@outlook.com>]

This reverts commit c743e671dad7a36871b6ab8e061e4200e64a4f54.

The original commit introduced a workaround forcing the use of
legacy iptables and ebtables backends via `update-alternatives`
in the systemd service unit. This was originally required due to
critical bugs in the nftables-based variants.

As these upstream issues have been fixed and the nftables backend
is now stable and preferred in Debian, this workaround is no longer
necessary.

Signed-off-by: Ethan Zuo <yuxuan.zuo@outlook.com>
---
 debian/pve-firewall.service | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/debian/pve-firewall.service b/debian/pve-firewall.service
index f95ce6d..63fc57f 100644
--- a/debian/pve-firewall.service
+++ b/debian/pve-firewall.service
@@ -8,9 +8,6 @@ Before=shutdown.target
 Conflicts=shutdown.target
 
 [Service]
-ExecStartPre=-/usr/bin/update-alternatives --set ebtables /usr/sbin/ebtables-legacy
-ExecStartPre=-/usr/bin/update-alternatives --set iptables /usr/sbin/iptables-legacy
-ExecStartPre=-/usr/bin/update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
 ExecStart=/usr/sbin/pve-firewall start
 ExecStop=/usr/sbin/pve-firewall stop
 ExecReload=/usr/sbin/pve-firewall restart
-- 
2.51.0