iptables-extensions (man8)
iptables-extensions — list of extensions in the standard iptables distribution
iptables-extensions — list of extensions in the standard iptables distribution
vgs − Display information about volume groups
ip-l2tp – L2TPv3 static unmanaged tunnel configuration
pam_timestamp_check − Check to see if the default timestamp is valid
mkntfs − create an NTFS file system
rpcdebug − set and clear NFS and RPC kernel debug flags
isadump − examine ISA registers
thin_repair – repair thin provisioning binary metadata.
systemd-machine-id-commit.service − Commit a transient machine ID to disk
pam_shells − PAM module to check for valid login shell