Comment 2 for bug 1812978

This test has passed on B-hwe, with some syntax error:
 selftests: net: rtnetlink.sh
 ========================================
 PASS: policy routing
 PASS: route get
 PASS: tc htb hierarchy
 PASS: gre tunnel endpoint
 PASS: gretap
 Usage: ... { ip6gre | ip6gretap | ip6erspan} [ remote ADDR ]
 [ local ADDR ]
 [ [i|o]seq ]
 [ [i|o]key KEY ]
 [ [i|o]csum ]
 [ hoplimit TTL ]
 [ encaplimit ELIM ]
 [ tclass TCLASS ]
 [ flowlabel FLOWLABEL ]
 [ dscp inherit ]
 [ fwmark MARK ]
 [ dev PHYS_DEV ]
 [ noencap ]
 [ encap { fou | gue | none } ]
 [ encap-sport PORT ]
 [ encap-dport PORT ]
 [ [no]encap-csum ]
 [ [no]encap-csum6 ]
 [ [no]encap-remcsum ]
 [ erspan IDX ]

 Where: ADDR := IPV6_ADDRESS
 TTL := { 0..255 } (default=64)
 KEY := { DOTTED_QUAD | NUMBER }
 ELIM := { none | 0..255 }(default=4)
 TCLASS := { 0x0..0xff | inherit }
 FLOWLABEL := { 0x0..0xfffff | inherit }
 MARK := { 0x0..0xffffffff | inherit }
 Cannot find device "ip6gretap00"
 FAIL: ip6gretap
 Usage: ... { gre | gretap | erspan } [ remote ADDR ]
 [ local ADDR ]
 [ [i|o]seq ]
 [ [i|o]key KEY ]
 [ [i|o]csum ]
 [ ttl TTL ]
 [ tos TOS ]
 [ [no]pmtudisc ]
 [ [no]ignore-df ]
 [ dev PHYS_DEV ]
 [ noencap ]
 [ encap { fou | gue | none } ]
 [ encap-sport PORT ]
 [ encap-dport PORT ]
 [ [no]encap-csum ]
 [ [no]encap-csum6 ]
 [ [no]encap-remcsum ]
 [ external ]
 [ fwmark MARK ]
 [ erspan IDX ]

 Where: ADDR := { IP_ADDRESS | any }
 TOS := { NUMBER | inherit }
 TTL := { 1..255 | inherit }
 KEY := { DOTTED_QUAD | NUMBER }
 MARK := { 0x0..0xffffffff }
 Cannot find device "erspan00"
 Cannot find device "erspan00"
 Cannot find device "erspan00"
 Usage: ... { gre | gretap | erspan } [ remote ADDR ]
 [ local ADDR ]
 [ [i|o]seq ]
 [ [i|o]key KEY ]
 [ [i|o]csum ]
 [ ttl TTL ]
 [ tos TOS ]
 [ [no]pmtudisc ]
 [ [no]ignore-df ]
 [ dev PHYS_DEV ]
 [ noencap ]
 [ encap { fou | gue | none } ]
 [ encap-sport PORT ]
 [ encap-dport PORT ]
 [ [no]encap-csum ]
 [ [no]encap-csum6 ]
 [ [no]encap-remcsum ]
 [ external ]
 [ fwmark MARK ]
 [ erspan IDX ]

 Where: ADDR := { IP_ADDRESS | any }
 TOS := { NUMBER | inherit }
 TTL := { 1..255 | inherit }
 KEY := { DOTTED_QUAD | NUMBER }
 MARK := { 0x0..0xffffffff }
 Cannot find device "erspan00"
 Cannot find device "erspan00"
 Cannot find device "erspan00"
 FAIL: erspan
 Usage: ... { ip6gre | ip6gretap | ip6erspan} [ remote ADDR ]
 [ local ADDR ]
 [ [i|o]seq ]
 [ [i|o]key KEY ]
 [ [i|o]csum ]
 [ hoplimit TTL ]
 [ encaplimit ELIM ]
 [ tclass TCLASS ]
 [ flowlabel FLOWLABEL ]
 [ dscp inherit ]
 [ fwmark MARK ]
 [ dev PHYS_DEV ]
 [ noencap ]
 [ encap { fou | gue | none } ]
 [ encap-sport PORT ]
 [ encap-dport PORT ]
 [ [no]encap-csum ]
 [ [no]encap-csum6 ]
 [ [no]encap-remcsum ]
 [ erspan IDX ]

 Where: ADDR := IPV6_ADDRESS
 TTL := { 0..255 } (default=64)
 KEY := { DOTTED_QUAD | NUMBER }
 ELIM := { none | 0..255 }(default=4)
 TCLASS := { 0x0..0xff | inherit }
 FLOWLABEL := { 0x0..0xfffff | inherit }
 MARK := { 0x0..0xffffffff | inherit }
 Cannot find device "ip6erspan00"
 Cannot find device "ip6erspan00"
 Cannot find device "ip6erspan00"
 Usage: ... { ip6gre | ip6gretap | ip6erspan} [ remote ADDR ]
 [ local ADDR ]
 [ [i|o]seq ]
 [ [i|o]key KEY ]
 [ [i|o]csum ]
 [ hoplimit TTL ]
 [ encaplimit ELIM ]
 [ tclass TCLASS ]
 [ flowlabel FLOWLABEL ]
 [ dscp inherit ]
 [ fwmark MARK ]
 [ dev PHYS_DEV ]
 [ noencap ]
 [ encap { fou | gue | none } ]
 [ encap-sport PORT ]
 [ encap-dport PORT ]
 [ [no]encap-csum ]
 [ [no]encap-csum6 ]
 [ [no]encap-remcsum ]
 [ erspan IDX ]

 Where: ADDR := IPV6_ADDRESS
 TTL := { 0..255 } (default=64)
 KEY := { DOTTED_QUAD | NUMBER }
 ELIM := { none | 0..255 }(default=4)
 TCLASS := { 0x0..0xff | inherit }
 FLOWLABEL := { 0x0..0xfffff | inherit }
 MARK := { 0x0..0xffffffff | inherit }
 Cannot find device "ip6erspan00"
 Cannot find device "ip6erspan00"
 Cannot find device "ip6erspan00"
 Usage: ... { ip6gre | ip6gretap | ip6erspan} [ remote ADDR ]
 [ local ADDR ]
 [ [i|o]seq ]
 [ [i|o]key KEY ]
 [ [i|o]csum ]
 [ hoplimit TTL ]
 [ encaplimit ELIM ]
 [ tclass TCLASS ]
 [ flowlabel FLOWLABEL ]
 [ dscp inherit ]
 [ fwmark MARK ]
 [ dev PHYS_DEV ]
 [ noencap ]
 [ encap { fou | gue | none } ]
 [ encap-sport PORT ]
 [ encap-dport PORT ]
 [ [no]encap-csum ]
 [ [no]encap-csum6 ]
 [ [no]encap-remcsum ]
 [ erspan IDX ]

 Where: ADDR := IPV6_ADDRESS
 TTL := { 0..255 } (default=64)
 KEY := { DOTTED_QUAD | NUMBER }
 ELIM := { none | 0..255 }(default=4)
 TCLASS := { 0x0..0xff | inherit }
 FLOWLABEL := { 0x0..0xfffff | inherit }
 MARK := { 0x0..0xffffffff | inherit }
 Cannot find device "ip6erspan00"
 FAIL: ip6erspan
 PASS: bridge setup
 PASS: ipv6 addrlabel
 PASS: set ifalias cc6662b8-4a08-4e5e-8844-a0bada866201 for test-dummy0
 PASS: vrf
 PASS: vxlan
 FAIL: can't add fou port 7777, skipping test
 PASS: macsec
 ./rtnetlink.sh: line 527: 24244 Terminated ip x m > $tmpfile
 PASS: ipsec
 ok 1..10 selftests: net: rtnetlink.sh [PASS]