Unverified Commit 484e4365 authored by Vlastimil Holer's avatar Vlastimil Holer
Browse files

F #227, #86: Workaround sporadic IPv6 SLAAC privacy address on Ubuntus

parent 0af852da

src/etc/one-context.d/loc-10-network

+0 −1
Original line number Diff line number Diff line
@@ -155,7 +155,6 @@ case "$action" in 
    reconfigure)

        configure_network

        reload_network

        # wait_online

        ;;

    *)

        echo "ERROR [!]: Unknown ACTION: ${action}" >&2

src/etc/one-context.d/loc-10-network.d/netcfg-interfaces

+18 −3
Original line number Diff line number Diff line
@@ -69,7 +69,8 @@ stop_network() 
            for _iface in $_ifaces; do

                if [ "${_iface}" != 'lo' ] ; then

                    /sbin/ifdown "${_iface}"

                    /sbin/ip addr flush dev "${_iface}"

                    /sbin/ip link set dev "${_iface}" down || true

                    /sbin/ip addr flush dev "${_iface}" || true

                fi

            done

            ;;
@@ -181,6 +182,8 @@ gen_dhcp_conf() 
                ;;

        esac

    fi



    echo ""

}



gen_alias_conf()
@@ -250,9 +253,10 @@ EOT 
        esac

    fi



    echo ""



    if [ -n "${ip6_ula}" ]; then

        cat <<EOT



iface ${dev} inet6 static

  address ${ip6_ula}

  netmask 64
@@ -279,8 +283,15 @@ gen_dhcp6_conf() 
            echo "  pre-up echo 0 > /proc/sys/net/ipv6/conf/${dev}/use_tempaddr"

            ;;

        debian|ubuntu|devuan)

            echo "  privext 0" # this might not be effective in "dhcp" mode

            # Privext might not be effective in "dhcp" mode, so we better

            # directly configure also sysctl parameters. Also, there might

            # be a race condition between activating IPv4 and IPv6 part of

            # interface if IPv4 is dhcp. As a aresult, IPv6 SLAAC privacy

            # address might appear. So, for safety we better drop any global

            # IPv6 addresses as part of pre-up.

            echo "  privext 0"

            echo "  pre-up echo 0 > /proc/sys/net/ipv6/conf/${dev}/use_tempaddr"

            echo "  pre-up ip -6 addr flush dev ${dev} scope global || /bin/true"



            if [ -n "${mtu}" ]; then

                # Ignores "mtu x", IPv6-only interfaces would not be configured
@@ -292,6 +303,8 @@ gen_dhcp6_conf() 
            exit 1

            ;;

    esac



    echo ""

}



gen_alias6_conf()
@@ -313,6 +326,8 @@ EOT 
            ;;

    esac



    echo ""



    if [ -n "${ip6_ula}" ]; then

        cat <<EOT