diff --git a/build_debian.sh b/build_debian.sh
index 28493ea16877..e893b9df403a 100755
--- a/build_debian.sh
+++ b/build_debian.sh
@@ -318,6 +318,10 @@ set /files/etc/sysctl.conf/net.ipv6.conf.default.accept_dad 0
 set /files/etc/sysctl.conf/net.ipv6.conf.all.accept_dad 0
 set /files/etc/sysctl.conf/net.ipv6.conf.eth0.accept_dad 0
 
+set /files/etc/sysctl.conf/net.ipv6.conf.default.keep_addr_on_down 1
+set /files/etc/sysctl.conf/net.ipv6.conf.all.keep_addr_on_down 1
+set /files/etc/sysctl.conf/net.ipv6.conf.eth0.keep_addr_on_down 1
+
 set /files/etc/sysctl.conf/net.ipv6.conf.eth0.accept_ra_defrtr 0
 
 set /files/etc/sysctl.conf/net.core.rmem_max 2097152