VirtualBox

Opened 3 weeks ago

#22379 new defect

ICMP TTL changed from anything to 64

Reported by: marcin.bienkowski Owned by:
Component: network/NAT Version: VirtualBox-7.1.8
Keywords: ICMP TTL exceeded Cc: marcin.bienkowski
Guest type: Linux Host type: Linux

Description

When guest sends an ICMP packet (with some TTL), the host forwards this packet with TTL = 64.

This breaks tools like traceroute -I, i.e., the command "traceroute -I 8.8.8.8" prints just the final host (8.8.8.8).

Same command on the host machine prints actual path.

This worked fine on VirtualBox 6.x.

Attachments (3)

traceroute_and_wireshark.png (453.8 KB ) - added by marcin.bienkowski 3 weeks ago.
VBox.log (149.4 KB ) - added by marcin.bienkowski 3 weeks ago.
wireshark_on_host.png (376.3 KB ) - added by marcin.bienkowski 3 weeks ago.

Download all attachments as: .zip

Change History (3)

by marcin.bienkowski, 3 weeks ago

by marcin.bienkowski, 3 weeks ago

Attachment: VBox.log added

by marcin.bienkowski, 3 weeks ago

Attachment: wireshark_on_host.png added
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