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fix(wireguard): change default WIREGUARD_MTU from 1400 to 1320

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- Partially address #2533
This commit is contained in:
Quentin McGaw
2024-11-05 09:57:03 +00:00
parent 96a8015af6
commit c655500045
2 changed files with 6 additions and 3 deletions
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7
internal/configuration/settings/wireguard.go
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@@ -39,9 +39,12 @@ type Wireguard struct {
PersistentKeepaliveInterval *time.Duration `json:"persistent_keep_alive_interval"`
// Maximum Transmission Unit (MTU) of the Wireguard interface.
// It cannot be zero in the internal state, and defaults to
// 1400. Note it is not the wireguard-go MTU default of 1420
// 1320. Note it is not the wireguard-go MTU default of 1420
// because this impacts bandwidth a lot on some VPN providers,
// see https://github.com/qdm12/gluetun/issues/1650.
// It has been lowered to 1320 following quite a bit of
// investigation in the issue:
// https://github.com/qdm12/gluetun/issues/2533.
MTU uint16 `json:"mtu"`
// Implementation is the Wireguard implementation to use.
// It can be "auto", "userspace" or "kernelspace".
@@ -191,7 +194,7 @@ func (w *Wireguard) setDefaults(vpnProvider string) {
w.AllowedIPs = gosettings.DefaultSlice(w.AllowedIPs, defaultAllowedIPs)
w.PersistentKeepaliveInterval = gosettings.DefaultPointer(w.PersistentKeepaliveInterval, 0)
w.Interface = gosettings.DefaultComparable(w.Interface, "wg0")
const defaultMTU = 1400
const defaultMTU = 1320
w.MTU = gosettings.DefaultComparable(w.MTU, defaultMTU)
w.Implementation = gosettings.DefaultComparable(w.Implementation, "auto")
}