Source: ufw Version: 0.33-2 Severity: grave Tags: ipv6 Justification: renders package unusable
when enable ufw: ERROR: initcaps [Errno 2] modprobe: ERROR: could not insert 'ip6_tables': Unknown symbol in module, or unknown parameter (see dmesg) ip6tables v1.4.21: can't initialize ip6tables table `filter': Table does not exist (do you need to insmod?) Perhaps ip6tables or your kernel needs to be upgraded. dmesg output: ip6_tables: disagrees about version of symbol xt_compat_match_from_user ip6_tables: Unknown symbol xt_compat_match_from_user (err -22) ip6_tables: Unknown symbol xt_compat_check_entry_offsets (err 0) ip6_tables: Unknown symbol xt_check_entry_offsets (err 0) ip6_tables: Unknown symbol xt_copy_counters_from_user (err 0) ip6_tables: disagrees about version of symbol xt_compat_match_from_user ip6_tables: Unknown symbol xt_compat_match_from_user (err -22) ip6_tables: Unknown symbol xt_compat_check_entry_offsets (err 0) ip6_tables: Unknown symbol xt_check_entry_offsets (err 0) ip6_tables: Unknown symbol xt_copy_counters_from_user (err 0) ip6_tables: disagrees about version of symbol xt_compat_match_from_user ip6_tables: Unknown symbol xt_compat_match_from_user (err -22) ip6_tables: Unknown symbol xt_compat_check_entry_offsets (err 0) ip6_tables: Unknown symbol xt_check_entry_offsets (err 0) ip6_tables: Unknown symbol xt_copy_counters_from_user (err 0) Solution that work for me: I edited /etc/default/ufw and change the option IPV6=yes to IPV6=no. -- System Information: Debian Release: 8.5 APT prefers stable APT policy: (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system)
