[PATCH 4.15 046/122] net: ipv4: dont allow setting net.ipv4.route.min_pmtu below 68

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Sabrina Dubroca [ Upstream commit c7272c2f1229125f74f22dcdd59de9bbd804f1c8 ] According to RFC 1191 sections 3 and 4, ICMP frag-needed messages indicating an MTU below

[PATCH 4.15 046/122] net: ipv4: dont allow setting net.ipv4.route.min_pmtu below 68

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Sabrina Dubroca [ Upstream commit c7272c2f1229125f74f22dcdd59de9bbd804f1c8 ] According to RFC 1191 sections 3 and 4, ICMP frag-needed messages indicating an MTU below 68 should be rejected: