stdout '^example.net/m v0.1.0 '
! stdout '^example.net/m/p '
cp go.mod go.mod.orig

# Upgrading example.net/m/p without also upgrading example.net/m
# causes the import of package example.net/m/p to be ambiguous.
#
# TODO(#27899): Should we automatically upgrade example.net/m to v0.2.0
# to resolve the conflict?
! go get example.net/m/p@v1.0.0

go get example.net/split/nested@v0.0.0

go get example.net/...@v0.1.0
go list -m all
stdout '^example.net/split v0.1.0 '
stdout '^example.net/split/nested v0.1.0 '

go get example.net/...
go list -m all
stdout '^example.net/split v0.3.0 '
stdout '^example.net/split/nested v0.2.0 '


# @none applies to all matching module paths,
# regardless of whether they contain any packages.

go get example.net/...@none

	{"net.inet.gre.allow", []_C_int{4, 2, 47, 1}},
	{"net.inet.gre.wccp", []_C_int{4, 2, 47, 2}},
	{"net.inet.icmp.bmcastecho", []_C_int{4, 2, 1, 2}},
	{"net.inet.icmp.errppslimit", []_C_int{4, 2, 1, 3}},
	{"net.inet.icmp.maskrepl", []_C_int{4, 2, 1, 1}},
	{"net.inet.icmp.rediraccept", []_C_int{4, 2, 1, 4}},
	{"net.inet.icmp.redirtimeout", []_C_int{4, 2, 1, 5}},
	{"net.inet.icmp.stats", []_C_int{4, 2, 1, 7}},

go 1.17

require (
	example.net/a v0.2.0-pre
	example.net/b v0.1.0
	example.net/c v0.2.0
)

replace (
	example.net/a v0.1.0 => ./a1
	example.net/a v0.2.0-pre => ./a2p
	example.net/b v0.1.0 => ./b
	example.net/b v0.2.0 => ./b
	example.net/c v0.1.0 => ./c1
	example.net/c v0.2.0 => ./c2
)
-- example.go --
package example

import (
	_ "example.net/a"
	_ "example.net/b"
	_ "example.net/c"
)

stdout '^example.net/b v0.1.0 '
stdout '^example.net/c '  # BUG, but a minor and rare one


-- go.mod --
module example

go 1.15

replace (
	example.net/a v0.1.0 => ./a1
	example.net/b v0.1.0 => ./b1
	example.net/b v0.2.0 => ./b2
	example.net/c v0.1.0 => ./c1
	example.net/c v0.2.0 => ./c1
)

-- a1/go.mod --
module example.net/a

go 1.15

	{"net.inet.gre.allow", []_C_int{4, 2, 47, 1}},
	{"net.inet.gre.wccp", []_C_int{4, 2, 47, 2}},
	{"net.inet.icmp.bmcastecho", []_C_int{4, 2, 1, 2}},
	{"net.inet.icmp.errppslimit", []_C_int{4, 2, 1, 3}},
	{"net.inet.icmp.maskrepl", []_C_int{4, 2, 1, 1}},
	{"net.inet.icmp.rediraccept", []_C_int{4, 2, 1, 4}},
	{"net.inet.icmp.redirtimeout", []_C_int{4, 2, 1, 5}},
	{"net.inet.icmp.stats", []_C_int{4, 2, 1, 7}},

	example.net/a v0.2.0 => ./a
	example.net/a v0.3.0 => ./a
	example.net/b v0.1.0 => ./b10
	example.net/b v0.1.1 => ./b11
	example.net/b v0.1.2 => ./b12
)
-- example.go --
package example

import _ "example.net/a"

-- a/go.mod --
module example.net/a

go 1.16

require example.net/b v0.1.0
-- a/a.go --
package a

import _ "example.net/b"

-- b10/go.mod --
module example.net/b

go 1.16

`

const (
	flagUp       = net.FlagUp | net.FlagBroadcast | net.FlagMulticast
	flagDown     = net.FlagBroadcast | net.FlagMulticast
	flagLoopback = net.FlagUp | net.FlagLoopback
	flagP2P      = net.FlagUp | net.FlagPointToPoint
)

func makeIntf(index int, name string, flags net.Flags) net.Interface {
	mac := net.HardwareAddr{0, 0x32, 0x7d, 0x69, 0xf7, byte(0x30 + index)}
	return net.Interface{
		Index:        index,

	{"net.inet.gre.allow", []_C_int{4, 2, 47, 1}},
	{"net.inet.gre.wccp", []_C_int{4, 2, 47, 2}},
	{"net.inet.icmp.bmcastecho", []_C_int{4, 2, 1, 2}},
	{"net.inet.icmp.errppslimit", []_C_int{4, 2, 1, 3}},
	{"net.inet.icmp.maskrepl", []_C_int{4, 2, 1, 1}},
	{"net.inet.icmp.rediraccept", []_C_int{4, 2, 1, 4}},
	{"net.inet.icmp.redirtimeout", []_C_int{4, 2, 1, 5}},
	{"net.inet.icmp.stats", []_C_int{4, 2, 1, 7}},

	{"net.inet.gre.allow", []_C_int{4, 2, 47, 1}},
	{"net.inet.gre.wccp", []_C_int{4, 2, 47, 2}},
	{"net.inet.icmp.bmcastecho", []_C_int{4, 2, 1, 2}},
	{"net.inet.icmp.errppslimit", []_C_int{4, 2, 1, 3}},
	{"net.inet.icmp.maskrepl", []_C_int{4, 2, 1, 1}},
	{"net.inet.icmp.rediraccept", []_C_int{4, 2, 1, 4}},
	{"net.inet.icmp.redirtimeout", []_C_int{4, 2, 1, 5}},
	{"net.inet.icmp.stats", []_C_int{4, 2, 1, 7}},