disable IPv6 on the rsppp0 TUN device

rsdsl_pppoe does not support IPv6CP and will constantly complain about invalid EtherTypes due to the kernel trying to autoconfigure using NDP Neighbor-Solicitations

1 files changed, 3 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 38b79c0..950d165 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -68,6 +68,9 @@ fn configure_wan() {
 }
 
 fn configure_rsppp0() -> Result<()> {
+    // I've never seen ISPs tunnel IPv6 in PPP and haven't implemented it.
+    fs::write("/proc/sys/net/ipv6/conf/rsppp0/disable_ipv6", "1")?;
+
     link::up("rsppp0".into())?;
 
     let mut file = File::open(rsdsl_ip_config::LOCATION)?;