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Orbi RBR20 v2.6.1.36, bug in IPv6 over PPPoE WAN remains.
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On set 14th 20 I reported a bug on IPv6 over PPPoE WAN connection cause by wrong TCPMSS / MTU afecting my Orbi RBR20 v2.5.1.16, it cause and some insights about how to fix it. On that time the same bug were present on RBR50/RBR50 v2 running v2.5.1.16 and days after in v2.5.2.4 launched on set 17th 20.
Since then Netgear released RBR20 v2.6.1.36 (oct 7th 20) and RBR50/RBR50 v2 v2.6.1.40 (oct 27th 20), but unfortunatly they implemented fix only for RBR50/RBR50 v2 model and didn't care about RBR20.
RBR20 owners, I'm very disapointed with Netgear support behavior, but how could we ask to support team "save us" too ?
Fix implemented on RBR50/RBR50 v2 firmware v2.6.1.40 in /etc/net6conf/6service
diff ./_RBR20-V2.6.1.36.img.extracted/squashfs-root/etc/net6conf/6service ./_RBR50-V2.6.1.40.img.extracted/squashfs-root/etc/net6conf/6service 43a44,66 > > wan_type=`$CONFIG get wan_proto` > if [ "x$wan_type" = "xpppoe" ]; then > wan_mtu=`$CONFIG get wan_pppoe_mtu` > elif [ "x$wan_type" = "xl2tp" ]; then > wan_mtu=`$CONFIG get wan_l2tp_mtu` > elif [ "x$wan_type" = "xpptp" ]; then > wan_mtu=`$CONFIG get wan_pptp_mtu` > elif [ "x$wan_type" = "xmulpppoe1" ]; then > wan_mtu=`$CONFIG get wan_mulpppoe_mtu` > else > if [ "x$w6_type" = "xpppoe" ];then > dhcp_mtu=`$CONFIG get wan_dhcp_mtu` > wan_mtu=$(($dhcp_mtu-8)) > else > wan_mtu=`$CONFIG get wan_dhcp_mtu` > fi > fi > > #for 6to4 and 6rd, the header still have ipv4 > if [ "x$w6_type" = "x6d" -o "x$w6_type" = "x6to4" ];then > wan_mtu=$(($wan_mtu - 20)) > fi 54a78 > printf '\tAdvLinkMTU %s;\n' "$wan_mtu"
PS:
binwalk was used to unpack firmware images.
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Finally NG published the /etc/net6conf/6service with the fix on RBR20 V2.6.2.104
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Re: Orbi RBR20 v2.6.1.36, bug in IPv6 over PPPoE WAN remains.
Sonething to keep in contact with NG support. Nothing we can do here in the forums.
Good Luck.
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Re: Orbi RBR20 v2.6.1.36, bug in IPv6 over PPPoE WAN remains.
Unfortunately, when I typed router serial number I was informed that my hardware is under warranty, but my 90 days complementary technical support has ended, so I'm unable to open a ticket on NG support.
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