[pd] semi-automated PD on raspbian scripts

examples/platforms/raspbian/default

@@ -31,6 +31,7 @@
 NAT64=1
 DNS64=0
 DHCPV6_PD=0
+DHCPV6_PD_REF=1
 NETWORK_MANAGER=0
 BACKBONE_ROUTER=1
 BORDER_ROUTING=1

script/_dhcpv6_pd_ref

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+customise_dhcpcd_conf()
+{
+    sudo tee /etc/dhcpcd.conf >/dev/null <<EOF
+# A sample configuration for dhcpcd.
+# See dhcpcd.conf(5) for details.
+
+# Allow users of this group to interact with dhcpcd via the control socket.
+#controlgroup wheel
+
+# Inform the DHCP server of our hostname for DDNS.
+#hostname
+
+# Use the hardware address of the interface for the Client ID.
+#clientid
+# or
+# Use the same DUID + IAID as set in DHCPv6 for DHCPv4 ClientID as per RFC4361.
+# Some non-RFC compliant DHCP servers do not reply with this set.
+# In this case, comment out duid and enable clientid above.
+#duid
+
+# Rapid commit support.
+# Safe to enable by default because it requires the equivalent option set
+# on the server to actually work.
+option rapid_commit
+
+# A ServerID is required by RFC2131.
+#require dhcp_server_identifier
+
+noipv6rs 
+# disable routing solicitation
+# denyinterfaces eth1  # Don't touch other_interfaces at all
+interface eth0
+  ipv6rs
+  iaid 1
+  ia_pd 2/::/64 -
+EOF
+}
+
+dhcpv6_pd_ref_stop()
+{
+    if [[ -f "/etc/dhcpcd.conf.orig" ]]; then
+        sudo mv /etc/dhcpcd.conf.orig /etc/dhcpcd.conf
+    fi
+    # sudo systemctl restart dhcpcd
+    sudo rm -f /etc/dhcpcd.enter-hook /etc/dhcpcd.exit-hook
+
+}
+
+dhcpv6_pd_ref_start()
+{
+    if [[ -f "/etc/dhcpcd.conf" ]]; then
+        sudo mv /etc/dhcpcd.conf /etc/dhcpcd.conf.orig
+    fi
+    customise_dhcpcd_conf
+    # Add dhcpcd.hooks
+    sudo install -m 755 "$(dirname "$0")"/reference-device/dhcpcd.enter-hook /etc/dhcpcd.enter-hook
+    sudo install -m 755 "$(dirname "$0")"/reference-device/dhcpcd.exit-hook /etc/dhcpcd.exit-hook
+
+}

script/bootstrap

@@ -106,6 +106,20 @@ install_packages_apt()
         fi
     }
 
+    # dhcpv6 pd
+    with DHCPV6_PD_REF && if [[ $PLATFORM == "raspbian" ]]; then
+        sudo apt-get install --no-install-recommends -y dhcpcd
+        sudo mkdir -p /etc/systemd/system/dhcpcd.service.d
+        # allow edit system config file eg. /etc/radvd.conf
+        sudo tee /etc/systemd/system/dhcpcd.service.d/custom.conf >/dev/null <<EOF
+[Service]
+ProtectSystem=false
+EOF
+        # reload dhcpcd daemon to activate the custom.conf
+        sudo systemctl daemon-reload
+        sudo apt-get install --no-install-recommends -y radvd
+    fi
+
     # network-manager
     without NETWORK_MANAGER || sudo apt-get install --no-install-recommends -y dnsmasq network-manager
 

script/reference-device/dhcpcd.enter-hook

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+WAN_INTERFACE="eth0"
+WPAN_INTERFACE="wpan0"
+RADVD_CONF="/etc/radvd.conf"
+LOG_TAG="dhcpcd.enter.hook:"
+
+
+config_ra()
+{
+    logger -t "$LOG_TAG $reason start config radvd"
+
+sudo tee "${RADVD_CONF}" > /dev/null <<EOF
+interface ${WPAN_INTERFACE}
+{
+    AdvSendAdvert on;
+    prefix ${1}/${2}
+    {
+        AdvOnLink on;
+        AdvAutonomous on;
+        AdvRouterAddr off;
+        AdvPreferredLifetime ${3};
+        AdvValidLifetime ${4};
+    };
+};
+EOF
+}
+
+
+if [ "${interface}" = "eth0" ]; then
+
+    for var in $(env); do
+        # Split the variable into name and value
+        name="${var%%=*}"
+        value="${var#*=}"
+        # Log to syslog
+        logger -t "$LOG_TAG $reason sysenv: " "$name=$value"
+    done
+
+    case $reason in
+        DELEGATED6 | REBIND6 | RENEW6 | BOUND6 )
+            logger "$LOG_TAG prefix is $new_dhcp6_ia_pd1_prefix1  length is $new_dhcp6_ia_pd1_prefix1_length pltime is  $new_dhcp6_ia_pd1_prefix1_pltime vltime is $new_dhcp6_ia_pd1_prefix1_vltime"
+            config_ra $new_dhcp6_ia_pd1_prefix1 $new_dhcp6_ia_pd1_prefix1_length $new_dhcp6_ia_pd1_prefix1_pltime  $new_dhcp6_ia_pd1_prefix1_vltime
+            sudo systemctl restart radvd || logger "$LOG_TAG Failed to restart radvd"
+            ;;
+    esac
+fi

script/reference-device/dhcpcd.exit-hook

@@ -0,0 +1,48 @@
+#!/bin/bash
+#dhcpcd.exit-hook
+
+
+WAN_INTERFACE="eth0"
+WPAN_INTERFACE="wpan0"
+
+RADVD_CONF="/etc/radvd.conf"
+LOG_TAG="dhcpcd.exit.hook:"
+
+config_ra()
+{
+    logger -t "$LOG_TAG $reason start config radvd"
+
+sudo tee "${RADVD_CONF}" > /dev/null <<EOF
+interface ${WPAN_INTERFACE}
+{
+    AdvSendAdvert on;
+    prefix ${1}/${2}
+    {
+        AdvOnLink on;
+        AdvAutonomous on;
+        AdvRouterAddr off;
+        AdvPreferredLifetime ${3};
+        AdvValidLifetime ${4};
+    };
+};
+EOF
+}
+
+if [ “${interface}” = “eth0” ]; then
+
+    for var in $(env); do
+        # Split the variable into name and value
+        name="${var%%=*}"
+        value="${var#*=}"
+        # Log to syslog
+        logger -t "$LOG_TAG $reason sysenv: " "$name=$value"
+    done
+
+    case $reason in
+        EXPIRE6 | STOP6)
+            config_ra $old_dhcp6_ia_pd1_prefix1 $old_dhcp6_ia_pd1_prefix1 0 0
+            sudo systemctl restart radvd
+            ;;
+    esac
+fi
+

script/setup

@@ -38,6 +38,7 @@
 . script/_nat64
 . script/_dns64
 . script/_dhcpv6_pd
+. script/_dhcpv6_pd_ref
 . script/_network_manager
 . script/_rt_tables
 . script/_swapfile
@@ -56,6 +57,7 @@ main()
     border_routing_uninstall
     network_manager_uninstall
     dhcpv6_pd_uninstall
+    dhcpv6_pd_ref_stop
     nat64_uninstall
     dns64_uninstall
     rt_tables_uninstall
@@ -69,6 +71,7 @@ main()
     dns64_install
     network_manager_install
     dhcpv6_pd_install
+    dhcpv6_pd_ref_start
     border_routing_install
     otbr_install
     # shellcheck source=/dev/null