Hi Yossi, Steffen,
I am using ipsec throug openvpn on one of my machines and it stopped
working since 4.15. Bisection showed that the culprit is:
5efec5c655dd xfrm: Fix eth_hdr(skb)->h_proto to reflect inner IP version
Reverting the patch does fix it for me.
I am seing h_proto being changed from 0x1bac to 0x8 and wireshark
doesn't see the ethernet header anymore:
Packet sent:
Frame 3: 142 bytes on wire (1136 bits), 142 bytes captured (1136 bits)
Ethernet II, Src: xx:xx:xx:xx:52:01 (xx:xx:xx:xx:52:01), Dst: IETF-VRRP-VRID_6a (xx:xx:xx:xx:01:6a)
Internet Protocol Version 4, Src: xx.xx.xx.xx, Dst: yy.yy.yy.yy
User Datagram Protocol, Src Port: 4500, Dst Port: 4500
UDP Encapsulation of IPsec Packets
Encapsulating Security Payload
ESP SPI: 0xc4bbc7d8 (3300640728)
ESP Sequence: 29
Packet received:
Frame 6: 128 bytes on wire (1024 bits), 128 bytes captured (1024 bits)
Raw packet data
Internet Protocol Version 4, Src: xx.xx.xx.xx, Dst: zz.zz.zz.zz
User Datagram Protocol, Src Port: 4500, Dst Port: 4500
UDP Encapsulation of IPsec Packets
Encapsulating Security Payload
ESP SPI: 0xc4bbc7d8 (3300640728)
ESP Sequence: 29
--
Regards,
Artem Savkov
-----Original Message-----
From: Artem Savkov [mailto:artem.savkov@gmail.com]
Sent: Sunday, February 11, 2018 10:34 AM
To: Yossi Kuperman <redacted>; Steffen Klassert <steffen.klassert@secunet.com>
Cc: netdev@vger.kernel.org
Subject: ipsec through openvpn broken
Hi Yossi, Steffen,
I am using ipsec throug openvpn on one of my machines and it stopped
I was trying to reproduce it and install OpenVPN, but according to their website,
it doesn’t support IPSec?
working since 4.15. Bisection showed that the culprit is:
5efec5c655dd xfrm: Fix eth_hdr(skb)->h_proto to reflect inner IP version
Reverting the patch does fix it for me.
I am seing h_proto being changed from 0x1bac to 0x8 and wireshark
doesn't see the ethernet header anymore:
Packet sent:
Can you please share the entire packet hex dump (sent and received)?
Not sure what 0x1bac should represent.
Frame 3: 142 bytes on wire (1136 bits), 142 bytes captured (1136 bits)
Ethernet II, Src: xx:xx:xx:xx:52:01 (xx:xx:xx:xx:52:01), Dst: IETF-VRRP-VRID_6a (xx:xx:xx:xx:01:6a)
Internet Protocol Version 4, Src: xx.xx.xx.xx, Dst: yy.yy.yy.yy
User Datagram Protocol, Src Port: 4500, Dst Port: 4500
UDP Encapsulation of IPsec Packets
Encapsulating Security Payload
ESP SPI: 0xc4bbc7d8 (3300640728)
ESP Sequence: 29
Packet received:
Frame 6: 128 bytes on wire (1024 bits), 128 bytes captured (1024 bits)
Raw packet data
Internet Protocol Version 4, Src: xx.xx.xx.xx, Dst: zz.zz.zz.zz
User Datagram Protocol, Src Port: 4500, Dst Port: 4500
UDP Encapsulation of IPsec Packets
Encapsulating Security Payload
ESP SPI: 0xc4bbc7d8 (3300640728)
ESP Sequence: 29
--
Regards,
Artem Savkov