please update FRR Debian repository

[liuxyon]

https://deb.frrouting.org/

To add this repository to your Debian/Ubuntu system, do:

add GPG key

curl -s https://deb.frrouting.org/frr/keys.asc | sudo apt-key add -

apt-key is deprecated. Manage keyring files in trusted.gpg.d instead

please update and use this way:

curl -fsSL https://deb.frrouting.org/frr/keys.asc | sudo gpg --dearmor -o /etc/apt/keyrings/frr-frrouting.gpg
FRRVER="frr-stable"
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/frr-frrouting.gpg] \
 https://deb.frrouting.org/frr $(lsb_release -s -c) $FRRVER" \
| sudo tee -a /etc/apt/sources.list.d/frr.list > /dev/null

[cosmedd]

if [ "$(whoami)" != "root" ]; then
    SUDO=sudo
fi
FRRVER="frr-stable"

curl -fsSL https://deb.frrouting.org/frr/keys.asc | $SUDO gpg --dearmor -o /etc/apt/keyrings/frr-frrouting.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/frr-frrouting.gpg] \
 https://deb.frrouting.org/frr $(lsb_release -s -c) $FRRVER" \
| $SUDO tee -a /etc/apt/sources.list.d/frr.list > /dev/null

Based on https://packages.sury.org/php/README.txt

[eqvinox]

Done, closing.